Home / 89,694.61-122,882.21-86,331.49

Finding the Fourth Proportional to 89,694.61, 122,882.21 and 86,331.49

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Solution

The fourth proportional to 89,694.61, 122,882.21 and 86,331.49 is: 118,274.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,694.61 : 122,882.21 = 86,331.49 : x
  2. Step 2: Convert to fraction form
    89,694.61/122,882.21 = 86,331.49/x
  3. Step 3: Cross multiply
    89,694.61x = 122,882.21 × 86,331.49
  4. Step 4: Simplify right side
    89,694.61x = 10,608,604,354.29
  5. Step 5: Solve for x
    x = 10,608,604,354.29/89,694.61
  6. Step 6: Final answer
    x = 118,274.72

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.